Conductor straightening device and method in vertical tower production process

Abstract

The invention discloses a conductor straightening device and method in the vertical tower production process, and belongs to the technical field of conductor straightening. The conductor straightening device comprises a vertical rack, a winding drum containing table installed on the lower left portion of the vertical rack and a pulley straightening mechanism installed on the upper right portion of the vertical rack; the pulley straightening mechanism comprises a first guiding straightening part transversely arranged on the left side, a tension control part vertically arranged in the middle and a second guiding straightening part transversely arranged on the right side. A conductor positioned on the winding drum placing table is axially straightened through the first guiding and straightening part, the tension control part and the second guiding and straightening part in sequence under the action of traction force; and the tension control part comprises a tension pulley I and a tension pulley II which are always positioned at the same height and can slide vertically. The conductor between the tension pulley I and the tension pulley II is guided in an up-down staggered manner, so that the traction tension on the conductor can be multiplied or reduced, and the straightness of the straightened conductor by the device is higher.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of conductor straightening, in particular to a conductor straightening device and method in a tower production process. BACKGROUND

[0002] In a tower type cable production line, the conductor (such as a cable) needs to be conveyed to the construction site by a reel. Since the cable is wound on the reel, axial bending occurs. In order to ensure the axial straightness of the cable during construction, the cable needs to be straightened axially.

[0003] The traditional conductor straightening method is to guide the cable through multiple fixed pulleys and straighten it with a straightener, and to adjust the tension of the cable using a movable pulley during the guiding process. Currently, the main way to change the tension of the movable pulley is to add a counterweight, but in practical application, the adjustment range of the cable tension by adding a counterweight is too small, and it also increases the occupied space and affects the sliding stroke of the movable pulley, ultimately leading to unsatisfactory tension control or tension adjustment. SUMMARY

[0004] The technical problem to be solved by the present application is to provide a conductor straightening device and method in a tower production process. The device can multiply the traction tension of the cable through an interlaced cable guiding method, so that the straightness of the conductor after straightening is higher.

[0005] To achieve the above-mentioned purpose, the following technical solutions are adopted in the present application:

[0006] A cable straightening device in a tower production process, comprising a vertical rack, a reel placing table installed at the lower left of the vertical rack, and a pulley straightening mechanism installed at the upper right of the vertical rack;

[0007] The pulley straightening mechanism comprises a first guiding and straightening part arranged horizontally on the left side, a tension control part arranged vertically in the middle, and a second guiding and straightening part arranged horizontally on the right side. The cable on the reel placing table is subjected to axial straightening in sequence through the first guiding and straightening part, the tension control part, and the second guiding and straightening part under the action of traction force.

[0008] The tension control part comprises a tension pulley one always located at the same height and a tension pulley two located below the tension pulley one and capable of vertical sliding. The cable between the tension pulley one and the tension pulley two is guided in an interlaced manner.

[0009] By adopting the above-mentioned scheme, the cable between the tension pulley one and the tension pulley two in the present application is guided in an interlaced manner, and the number of turns of the cable wound in an interlaced manner is increased or decreased, which can multiply the traction tension of the cable, so that the straightness of the cable after straightening by the device is higher.

[0010] As a preferred embodiment of the cable straightening device in the process of tower production, the reel placing table comprises a limiting base plate fixed horizontally on the vertical rack, a limiting column fixed vertically at the center of the limiting base plate, a rotating force arm rotatably installed at the top of the limiting column, a guide seat fixed at the end of the rotating force arm and vertically arranged, and two groups of line gathering devices symmetrically distributed at the edges of the limiting base plate, and the reel is sleeved vertically on the limiting column.

[0011] By adopting the above scheme, in order to place the reel, the rotating force arm is removed, the reel with the wound cable is sleeved on the limiting column, and then the rotating force arm is installed again. The rotating force arm can rotate 360° freely around the limiting column, and the cable on the reel is guided from the guide seat to the pulley straightening mechanism.

[0012] As a preferred embodiment of the cable straightening device in the process of tower production, the line gathering device comprises a main frame, a line gathering plate slidably installed in the main frame, and a rocker for driving the line gathering plate to slide to the position of the limiting column. The side surface of the line gathering plate is a slope.

[0013] By adopting the above scheme, in order to avoid the cable on the reel from falling down, the line gathering plate is adjusted to fit the cable on the reel by the rocker, thereby achieving the effect of gathering the cable.

[0014] As a preferred embodiment of the cable straightening device in the process of tower production, a protective shell is installed at the bottom of the limiting base plate, and a buffer spring is installed in the protective shell to support the limiting column.

[0015] By adopting the above scheme, in order to ensure that the guide seat at the top of the limiting column has the function of up and down buffering, the buffer spring is added at the bottom of the limiting column, thereby ensuring that the cable has better flexibility during guiding.

[0016] As a preferred embodiment of the cable straightening device in the process of tower production, the tension control part further comprises a double guide rail seat fixed vertically on the vertical rack, a tension pulley one rotatably installed at the top of the double guide rail seat, and a tension pulley two rotatably installed on a tension slide seat sliding on the guide rail of the double guide rail seat; a plurality of counterweights vertically arrayed are detachably installed at the bottom of the tension slide seat.

[0017] By adopting the above scheme, in order to realize the vertical sliding of the tension pulley two, when the tension slide seat slides vertically on the double guide rail seat, the vertical sliding of the tension pulley two is driven, and the increase or decrease of the counterweights at the bottom of the tension slide seat can slightly adjust the tension of the cable.

[0018] As a preferred embodiment of the cable straightening device in the process of tower production, the tension pulley one and the tension pulley two are double-groove or multi-groove pulleys, and the number of pulley grooves of the tension pulley one and the tension pulley two is equal.

[0019] By adopting the above scheme, in order to facilitate the substantial increase and decrease of the tension of the cable, the number of turns of the cable wound up and down is increased or decreased, and the counterweight does not need to be increased or decreased too much.

[0020] As a preferred embodiment of the cable straightening device in the tower production process, the first guide straightening part comprises a guide pulley one located on the left side and rotatably installed on the vertical rack, a guide pulley two located on the right side and rotatably installed on the vertical rack, and a straightener one located between the guide pulley one and the guide pulley two and fixed on the vertical rack, wherein the guide pulley one, the guide pulley two, and the tension pulley one are located at the same horizontal height; a guide frame vertically arranged at the left side of the guide pulley one is fixed;

[0021] The second guide straightening part comprises a guide pulley three located on the right side and rotatably installed on the vertical rack, and a straightener two located between the guide pulley three and the tension pulley one and fixed on the vertical rack, wherein the guide pulley three and the straightener two are located at the same horizontal height.

[0022] By adopting the above scheme, in order to realize the guidance of the cable, the entire straightening process mainly uses multiple guide pulleys for guidance, which can greatly reduce the friction of the cable during straightening.

[0023] As a preferred embodiment of the cable straightening device in the tower production process, the straightener one and the straightener two are structurally identical, both of which comprise a Z-shaped positioning frame, a reference base fixed at the bottom of the front side of the Z-shaped positioning frame, and a reference top fixed at the top of the front side of the Z-shaped positioning frame; a soft upper pressing piece and a soft lower pressing piece are further installed between the reference base and the reference top, wherein the cable is located between the upper pressing piece and the lower pressing piece, a top wire is installed through the reference base to push the upper pressing piece and the lower pressing piece vertically, and two limit pins for limiting the cable are installed on the upper pressing piece.

[0024] By adopting the above scheme, in order to realize the straightening of the cable, the cable is located between the upper pressing piece and the lower pressing piece, wherein the soft pressing can avoid damaging the cable, and when the cable passes through the horizontal upper pressing piece and the lower pressing piece, it is straightened under the pressure of the two.

[0025] A cable straightening method in a tower production process, which is implemented by using the above-mentioned cable straightening device, and the implementation steps are as follows:

[0026] S1, first remove the rotating arm, install the reel with the cable wound on the limiting column, and then install the rotating arm, wherein the rotating arm can rotate 360° freely around the limiting column;

[0027] S2, the cable on the reel is introduced upwards to the pulley straightening mechanism through the guide seat, at this time the cable passes through the guide frame, guide pulley one, straightener one and guide pulley two in turn, and the cable is preliminarily straightened by the straightener one;

[0028] S3, then the cable is introduced from the guide pulley two to the tension pulley two, and then the cable is guided in the tension pulley two and the tension pulley one at least twice, and the cable provides sufficient tension under the joint action of the tension pulley two and the counterweight; if the tension is insufficient, the number of times of interlaced guiding of the cable between the tension pulley two and the tension pulley one can be increased, or the number of counterweights can be slightly increased;

[0029] S4, then the cable is introduced from the tension pulley one to the straightener two and the guide pulley three, and the cable is secondarily straightened by the straightener two, and finally the cable is axially straightened by the traction machine.

[0030] The beneficial effects of the present application are:

[0031] 1, in the present application, the cable between the tension pulley one and the tension pulley two adopts an up-and-down interlaced guiding mode, and the number of turns of the cable wound up-and-down is increased or decreased, which can multiply the traction tension of the cable, without the need to increase or decrease the counterweight, so that the straightness of the cable after straightening is higher;

[0032] 2, in order to avoid the cable on the reel from falling down, the rocker is used to adjust the cable to adhere to the reel, thereby achieving the effect of gathering the cable;

[0033] 3, in order to ensure that the guide seat at the top of the limiting column has the function of up-and-down buffering, a buffer spring is added at the bottom of the limiting column, thereby ensuring that the cable has better flexibility when being guided;

[0034] 4, in order to realize the vertical sliding of the tension pulley two, the tension slide is vertically slid on the double guide rail seat, which drives the vertical sliding of the tension pulley two, and the number of counterweights at the bottom of the tension slide can be slightly adjusted to adjust the tension of the cable;

[0035] 5, in order to guide the cable, the whole straightening process mainly uses multiple guide pulleys for guiding, which can greatly reduce the friction of the cable during straightening; in order to straighten the cable, the cable is located between the upper and lower pressing plates, and the soft pressing plate can avoid damaging the cable, and when the cable passes through the horizontal upper and lower pressing plates, it is straightened under the pressure of the two. BRIEF DESCRIPTION OF DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0037] Figure 1 The three-dimensional structure of the conductor straightening device during the tower production process Figure 1 ;

[0038] Figure 2 The three-dimensional structure of the conductor straightening device during the tower production process Figure 2 ;

[0039] Figure 3 This is the front view of the conductor straightening device during the tower production process;

[0040] Figure 4 for Figure 1 The three-dimensional structure diagram of the middle roll placement platform;

[0041] Figure 5 To hide Figure 4 Three-dimensional structure behind the middle roll Figure 1 ;

[0042] Figure 6 for Figure 5 A partial enlarged view of point A in the middle;

[0043] Figure 7 To hide Figure 4 Three-dimensional structure behind the middle roll Figure 2 ;

[0044] Figure 8 To hide Figure 7 The three-dimensional structure behind the protective shell;

[0045] Figure 9 for Figure 1 The three-dimensional structure diagram of the middle pulley straightening mechanism;

[0046] Figure 10 for Figure 9 A partial enlarged view of point B in the middle;

[0047] Figure 11 To hide Figure 10 A partial enlarged view of the upper middle section after tableting;

[0048] Markings in the figure: 1-vertical frame; 2-reel placement table; 201-limiting chassis; 202-limiting column; 203-rotating force arm; 204-guide seat; 205-reel; 206-main frame; 207-thread gathering plate; 208-rocker; 209-protective shell; 210-buffer spring; 3-pulley straightening mechanism; 301-guide pulley 1; 302-guide pulley 2; 303-straightener 1; 304-guide frame; 305-tension pulley 1; 306-tension pulley 2; 307-double guide rail seat; 308-tension slide; 309-counterweight block; 310-guide pulley 3; 311-straightener 2; 312-Z-shaped positioning frame; 313-reference base; 314-reference top seat; 315-upper pressure plate; 316-lower pressure plate; 317-top screw; 318-limit pin; 4-cable. DETAILED DESCRIPTION

[0049] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0050] like Figures 1 to 9 As shown, a cable straightening device in the production process of a tower is provided, which is used for axial straightening of the cable 4 during the production or construction of a power transmission tower. The device specifically comprises a vertical frame 1, a drum 205 placement platform 2 installed at the lower left of the vertical frame 1, and a pulley straightening mechanism 3 installed at the upper right of the vertical frame 1; the pulley straightening mechanism 3 comprises a first guide straightening part arranged horizontally on the left, a tension control part arranged vertically in the middle, and a second guide straightening part arranged horizontally on the right. The cable 4 on the drum 205 placement platform 2 is sequentially straightened under the action of traction. The first guiding and straightening part, the tension control part, and the second guiding and straightening part perform axial straightening; the tension control part includes a tension pulley 1 305 which is always located at the same height, and a tension pulley 2 306 which is located below the tension pulley 1 305 and can slide vertically. The cable 4 between the tension pulley 1 305 and the tension pulley 2 306 is guided in an up-and-down staggered manner; wherein the tension pulley 1 305 and the tension pulley 2 306 are both multi-groove pulleys with double grooves or more, and the number of pulley grooves of the tension pulley 1 305 and the tension pulley 2 306 are equal. Figure 9 Both the first tension pulley 305 and the second tension pulley 306 have three pulley grooves. In this solution, the cable 4 between the first and second tension pulleys 305 and 306 is guided in an up-and-down staggered manner. By increasing or decreasing the number of turns of the cable 4, the pulling tension on the cable 4 can be multiplied or reduced, resulting in a higher straightness for the cable 4 after being straightened.

[0051] As shown in Figures 4 to 5 , the reel 205 placing table 2 comprises a limiting base plate 201 fixed horizontally on the vertical rack 1, a limiting column 202 fixed vertically at the center of the limiting base plate 201, a rotating force arm 203 rotatably installed at the top of the limiting column 202, a guide seat 204 fixed at the end of the rotating force arm 203 and vertically arranged, and two groups of line gathering devices symmetrically distributed at the edges of the limiting base plate 201, and the reel 205 is sleeved vertically on the limiting column 202, Figure 4 、 Figure 5 The cable 4 wound on the reel 205 is omitted in the figure. In order to realize the placement of the reel 205, the rotating force arm 203 is first removed, the reel 205 with the cable 4 wound thereon is sleeved on the limiting column 202, and then the rotating force arm 203 is installed again. The rotating force arm 203 can rotate freely by 360° around the limiting column 202, and the cable 4 on the reel 205 is guided from the guide seat 204 to the pulley straightening mechanism 3.

[0052] As shown in Figure 6 , the line gathering device comprises a main frame 206, a line gathering plate 207 slidingly installed in the main frame 206, and a rocker 208 driving the line gathering plate 207 to slide to the position of the limiting column 202. The side surface of the line gathering plate 207 is inclined. In order to avoid the cable 4 on the reel 205 from falling down, the line gathering plate 207 is adjusted to fit the cable 4 on the reel 205 by the rocker 208, thereby achieving the effect of gathering the cable 4.

[0053] As shown in Figures 7 to 8 , the bottom of the limiting base plate 201 is provided with a protective shell 209, and the protective shell 209 is provided with a buffer spring 210 supporting the limiting column 202. In order to ensure that the guide seat 204 at the top of the limiting column 202 has the function of buffering up and down, the buffer spring 210 is added at the bottom of the limiting column 202, thereby ensuring that the cable 4 has better flexibility during guiding.

[0054] As shown in Figure 9 , the tension control part further comprises a double guide rail seat 307 fixed vertically on the vertical rack 1, a tension pulley one 305 rotatably installed at the top of the double guide rail seat 307, and a tension pulley two 306 rotatably installed on a tension slide seat 308 sliding on the guide rail of the double guide rail seat 307; a plurality of counterweight blocks 309 vertically arrayed are detachably installed at the bottom of the tension slide seat 308, Figure 9 The number of counterweight blocks 309 is two, and the single counterweight block 309 is 15KG. In order to realize the vertical sliding of the tension pulley two 306, the tension slide seat 308 vertically slides on the double guide rail seat 307, which drives the vertical sliding of the tension pulley two 306. The increase or decrease of the counterweight blocks 309 at the bottom of the tension slide seat 308 can slightly adjust the tension on the cable 4.

[0055] As Figure 9 shown, the first guiding and straightening part includes a guiding pulley one 301 located at the left side and rotatably mounted on the vertical rack 1, a guiding pulley two 302 located at the right side and rotatably mounted on the vertical rack 1, and a straightener one 303 located between the guiding pulley one 301 and the guiding pulley two 302 and fixed on the vertical rack 1, wherein the guiding pulley one 301, the guiding pulley two 302 and the tension pulley one 305 are located at the same horizontal height; the left side of the guiding pulley one 301 is fixed with a guiding frame 304 vertically arranged with an opening. Figure 9 As

[0056] As Figures 10 to 11 shown, the straightener one 303 and the straightener two 311 are the same in structure, both of which include a Z-shaped positioning frame 312, a reference base 313 fixed on the bottom of the front side of the Z-shaped positioning frame 312, and a reference top base 314 fixed on the top of the front side of the Z-shaped positioning frame 312; between the reference base 313 and the reference top base 314 are further mounted a soft upper pressing piece 315 and a soft lower pressing piece 316, wherein the cable 4 is located between the upper pressing piece 315 and the lower pressing piece 316, the reference base 313 is further installed with a top wire 317 vertically moving to push the upper pressing piece 315 and the lower pressing piece 316, and the upper pressing piece 315 is installed with two limit pins 318 staggered and used for limiting the cable 4. In order to straighten the cable 4, the cable 4 is located between the upper pressing piece 315 and the lower pressing piece 316, wherein the soft pressing can avoid damaging the cable 4, and when the cable 4 passes through the horizontal upper pressing piece 315 and the lower pressing piece 316, it is straightened under the pressure of the two.

[0057] As Figure 9 shown, a cable 4 straightening method in a tower production process, the method is implemented by using the above-mentioned cable 4 straightening device, and the implementation steps are as follows:

[0058] S1, first, the rotating arm 203 is removed, the drum 205 wound with the cable 4 is sleeved on the limiting column 202, and then the rotating arm 203 is installed again, wherein the rotating arm 203 can be freely rotated by 360° around the limiting column 202;

[0059] S2, the cable 4 on the reel 205 is introduced into the pulley straightening mechanism 3 through the guide seat 204, at this time the cable 4 passes through the guide frame 304, the guide pulley one 301, the straightener one 303 and the guide pulley two 302 in sequence, the cable 4 is preliminarily straightened by the straightener one 303;

[0060] S3, then the cable 4 is introduced into the tension pulley two 306 from the guide pulley two 302, then the cable 4 is alternately guided between the tension pulley two 306 and the tension pulley one 305 for at least two times, the cable 4 provides sufficient tension under the joint action of the tension pulley two 306 and the counterweight 309, Figure 9 The number of times of alternately guiding between the tension pulley two 306 and the tension pulley one 305 is 2 times; if the tension is insufficient, the number of times of alternately guiding between the tension pulley two 306 and the tension pulley one 305 can be increased, or the number of the counterweights 309 can be slightly increased;

[0061] S4, then the cable 4 is introduced into the straightener two 311 and the guide pulley three 310 from the tension pulley one 305, after being straightened by the straightener two 311, the cable 4 is finally axially straightened by the traction machine.

[0062] The above is only the preferred embodiment of the present application, and is not used to limit the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A conductor straightening device for a tower production process, comprising a vertical frame, a reel placement platform mounted on the lower left side of the vertical frame, and a pulley straightening mechanism mounted on the upper right side of the vertical frame; Its characteristics are: The pulley straightening mechanism includes a first guide straightening portion arranged horizontally on the left side, a tension control portion arranged vertically in the middle, and a second guide straightening portion arranged horizontally on the right side. The conductor on the reel placement table is axially straightened by the first guide straightening portion, the tension control portion, and the second guide straightening portion in sequence under the action of traction. The tension control part includes a tension pulley 1 which is always located at the same height and a tension pulley 2 which is located below the tension pulley 1 and can slide vertically. The conductor between the tension pulley 1 and the tension pulley 2 is guided in an up-and-down staggered manner.

2. The conductor straightening device during the tower production process according to claim 1, characterized in that: The tension control part also includes a double guide rail seat vertically fixed on the vertical frame, the tension pulley 1 is rotatably installed on the top of the double guide rail seat, and the tension pulley 2 is rotatably installed on the tension slide sliding on the guide rail of the double guide rail seat; the bottom of the tension slide is detachably installed with multiple counterweight blocks that can be distributed in a vertical array.

3. The conductor straightening device during the tower production process according to claim 2, characterized in that: The tension pulley 1 and the tension pulley 2 are both multi-groove pulleys with double grooves or more, and the number of pulley grooves of the tension pulley 1 and the tension pulley 2 is equal.

4. The conductor straightening device during the tower production process according to claim 3, characterized in that: The first guide and straightening part includes a guide pulley 1 located on the left and rotatably mounted on the vertical frame, a guide pulley 2 located on the right and rotatably mounted on the vertical frame, and a straightener 1 located between the guide pulley 1 and the guide pulley 2 and fixed on the vertical frame, wherein the guide pulley 1, the guide pulley 2 and the tension pulley 1 are located at the same horizontal height; a guide frame with a vertical guide port is fixed to the left side of the guide pulley 1.

5. The conductor straightening device during the tower production process according to claim 4, characterized in that: The second guide and straightening part includes a guide pulley three located on the right side and rotatably mounted on the vertical frame, and a straightener two located between the guide pulley three and the tension pulley one and fixed on the vertical frame, wherein the guide pulley three and the straightener two are located at the same horizontal height.

6. The conductor straightening device during the tower production process according to claim 5, characterized in that: The straightener one and the straightener two have the same structure, and both include a Z-shaped positioning frame, a reference base fixed to the bottom of the front side of the Z-shaped positioning frame, and a reference top seat fixed to the top of the front side of the Z-shaped positioning frame; a soft upper pressing plate and a soft lower pressing plate are also installed between the reference base and the reference top seat, wherein the conductor is located between the upper pressing plate and the lower pressing plate, and a top screw is installed through the reference base to push the upper pressing plate and the lower pressing plate to move vertically, and two staggered limit pins are installed on the upper pressing plate for limiting the conductor.

7. The conductor straightening device during the tower production process according to claim 6, characterized in that: The reel placement platform includes a limiting chassis horizontally fixed on a vertical frame, a limiting column vertically fixed at the center of the limiting chassis, a rotating arm rotatably installed on the top of the limiting column, a guide seat fixed at the end of the rotating arm and with a vertical lead-in port, and two sets of wire gathering devices symmetrically distributed at the edge of the limiting chassis, and a reel is vertically mounted on the limiting column.

8. The conductor straightening device during the tower production process according to claim 7, characterized in that: The wire gathering device includes a main frame, a wire gathering plate slidably installed in the main frame, and a rocker driving the wire gathering plate to slide toward the position where the limiting column is located. The side surface of the wire gathering plate is an inclined surface.

9. The conductor straightening device during the tower production process according to claim 8, characterized in that: A protective shell is installed at the bottom of the limiting chassis, and a buffer spring supporting the limiting column is installed in the protective shell.

10. A conductor straightening method during tower production, characterized in that: The method is implemented using the conductor straightening device in the tower production process according to any one of claims 7 to 9, and the implementation steps are as follows: S1. First remove the rotating lever arm, put the reel with the conductor on it on the limit column, and then install the rotating lever arm. The rotating lever arm can rotate freely 360 degrees around the limit column. S2. The conductor on the reel is introduced upwards into the pulley straightening mechanism through the guide seat. At this time, the conductor passes through the guide frame, guide pulley 1, straightener 1, and guide pulley 2 in sequence. The conductor is initially straightened by straightener 1. S3. The conductor is then introduced from the second guide pulley to the second tension pulley. The conductor is then interlaced and guided at least twice between the second tension pulley and the first tension pulley. The conductor is provided with sufficient tension under the combined action of the second tension pulley and the counterweight. If the tension is insufficient, the number of times the conductor is interlaced and guided between the second tension pulley and the first tension pulley can be increased, or the number of counterweights can be slightly increased. S4. The conductor is then introduced from the tension pulley 1 to the straightener 2 and the guide pulley 3. The conductor is straightened twice by the straightener 2 and finally axially straightened by the traction machine.

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